Home / 100,983.28-139,357.48-58,566.96

Finding the Fourth Proportional to 100,983.28, 139,357.48 and 58,566.96

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Solution

The fourth proportional to 100,983.28, 139,357.48 and 58,566.96 is: 80,822.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,983.28 : 139,357.48 = 58,566.96 : x
  2. Step 2: Convert to fraction form
    100,983.28/139,357.48 = 58,566.96/x
  3. Step 3: Cross multiply
    100,983.28x = 139,357.48 × 58,566.96
  4. Step 4: Simplify right side
    100,983.28x = 8,161,743,956.86
  5. Step 5: Solve for x
    x = 8,161,743,956.86/100,983.28
  6. Step 6: Final answer
    x = 80,822.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.